Irrigation - Increase total extent of cultivation lands under major tanks. Improve crop intensity up to 2.0

Lift Irrigation for cash crops in high lands

Drinking water supply to 50,000 families in Kurunegala and Puttalama. - Improve water quality

Expected Benefits to the Country

Increases Gross Domestic Production.

Improve livelihood practices/ living standards/ prevent youth unrest

Rural development towards reduction of demographic transition

1.5 MW Hydro Electricity Generations.

Command AreaRidi Bendi Ella (Magalla wewa)

Existing

-

2400 h.a

New

-

600 h.a

Mee Oya Basin

Inginimitiya Scheme (Existing)

-

2640 h.a

Radavi Bendi Ella (Existing)

-

210 h.a

Tabbowa Scheme (Existing)

-

865 h.a

Radavi Bendi Ella (New)

-

400 h.a

Total Command Area

-

11115 h.a

Digili Oya

Basic Data

Province

:

District

:

Divisional Secretaries Area

:

Estimated Cost

:

Funded by

:

Coordinate

:

River Basin

:

Bund

:

Reservoir Data

Capacity

:

Dead Storage

:

Bund Length

:

Bund Top Level

:

Bund Height

:

Top Width

:

Catchment Area

:

Water Spread Area

:

Sluice

Gates

-

U/S Sill

-

D/S Sill

-

Spill

Gate Size

-

U/S Sill

-

D/S Sill

-

Ogee Spill

-

Canal Data

Main Canal

-

D canals

-

Field Canals

-

Benefits

Expected Benefits to the Country

Ella Pothana

Basic Data

Province

:

District

:

Divisional Secretaries Area

:

Estimated Cost

:

Funded by

:

Coordinate

:

River Basin

:

Bund

:

Reservoir Data

Capacity

:

Dead Storage

:

Bund Length

:

Bund Top Level

:

Bund Height

:

Top Width

:

Catchment Area

:

Water Spread Area

:

Sluice

Gates

-

U/S Sill

-

D/S Sill

-

Spill

Gate Size

-

U/S Sill

-

D/S Sill

-

Ogee Spill

-

Canal Data

Main Canal

-

D canals

-

Field Canals

-

Benefits

Expected Benefits to the Country

Ella Wewa

Basic Data

Province

:

Sabaragamuwa

District

:

Rathnapura

Divisional Secretaries Area

:

Estimated Cost

:

Rs. 470 mn

Funded by

:

Irrigable area

:

Existing - 1,250 mn

Proposed capacity

:

1,800 ac.ft

Farm Families

:

600 families (under Panamura)

Reservoir Data

Capacity

:

Dead Storage

:

Bund Length

:

Bund Top Level

:

Bund Height

:

Top Width

:

Catchment Area

:

Water Spread Area

:

Sluice

Gates

-

U/S Sill

-

D/S Sill

-

Spill

Gate Size

-

U/S Sill

-

D/S Sill

-

Ogee Spill

-

Canal Data

Main Canal

-

D canals

-

Field Canals

-

Benefits

Expected Benefits to the Country

Ganagalathenna

Basic Data

Province

:

District

:

Divisional Secretaries Area

:

Estimated Cost

:

Funded by

:

Government of Sri Lanka

Project Duration

:

No of Beneficiaries

:

Bund

:

Reservoir Data

Co-ordinate

:

J/21 (8.23 & 2.20)

Dead Storage

:

Specific yield Maha

:

141 Acft

Yala

:

61 Acft

Tank Bund length

:

160 m

Full Supply level

:

112.2 m

High flood level

:

112.6 m

Afflux

:

0.4 m

Bund top level

:

113.7 m

Area at F.S.L

:

10.5 Acs

Capacity at F.S.L

:

160500 m cubic

Side slops u/s

:

1:2.5

d/s

:

1:2.0

Maximum bund height

:

12.7 m

R.B. Sluice

Type

:

Concrete Tower

Size

:

0.6 X 0.6m. rectangular

Sill level

:

106.0 m

L.B Sluice

Type

:

Hume pipe tower

Size

:

0.6 m. dia.

Sill level

:

106.0m

Spillway

Type

:

Clear overflow

Length

:

11 m

Kalugal Oya

Basic Data

Province

:

Eastern

District

:

Ampara

Divisional Secretaries Area

:

Uhana

Estimated Cost

:

Rs. 1.87 Bn

Funded by

:

Government of Sri Lanka

Coordinate

:

J/20(2.04x7.45)

River Basin

:

Bund

:

No of Beneficiaries

:

1,000 families

Irrigable Area

:

608 ha (1,500 Acres)

Reservoir Capacity

:

10 MCM (8,100 Acft)

Project Duration

:

2014 to 2016

Reservoir Data

Full Supply level

:

57.00m MSL

Capacity

:

8004 Ac.ft

Dead Storage Level

:

48.50m MSL

Dead Storage

:

258 Ac.ft

Dam

Type

:

Homogeneous Earth Fill

Bund Top level

:

59.5 m MSL

Bund Top width

:

5.0m

Maximum Height of the Bund

:

18.2m

Length of the Bund

:

U/S 1 on 3.0

Side slope

:

D/S 1 on 2.5

Spill Way

Size gates

:

2 Nos of 20ft X 18.35ft radial

Spill Crest

:

51.710m MSL

High Flood level

:

57.230m MSL

Sluices

No of sluices

:

1 No

Type

:

Tower Type

Size

:

Rectangular 1.0m X 1.25m

Size of Gate

:

Rectangular 1.25m X 1.85m

Channel System

Main Channel

:

800m

RB Main Channel

:

12km Extent 1100 Acs

LB Main Channel

:

4.5km Extent 400Acs

Access Road

Length of Access Road

:

2km

Width

:

7m

Benefits

Maha (Paddy)

:

1,500Acs

Yala (Pady)

:

1,500Acs

It has been proposed to construct a reservoir across the kalugaloya river to irrigate the paddy land of an extend of 1500 acs, by including just 600 acs in Bandaraduwa area and it would be a real benefit to the country.